2.绝对值不大于10的所有整数的和等于 ( )
A.-10 B.0 C.10 D.20
1.-5的相反数与5的倒数的差是 ( )
A. B. C. D.
60. What do you think of Goldman? Please give your reasons. (No more than 20 words)
_______________________________________________________________________________
59. Why did Goldman hire people to push carts around his market? (No more than 10 words)
58. Why was Goldman disappointed at first? (No more than 10 words)
______________________________________________________________________________
57. What was the purpose of Goldman’s invention? (No more than 10 words)
56. The underlined words “chrome-plate contraptions” in Paragraph 1 refer to ______________________________________________________________________________.
(No more than 3 words)
80. Translate the underlined sentence in Paragraph 3 into Chinese.
(2)
79. List three effects of smiling on health according to the text. (within 8 words)
① ② ③